#4282 · 🕷️ spiders & kin
Woodlouse Spider
🇳🇱 Roodwitte Celspin ·Dysdera crocata
🕷️ Spiders & kin 📍 in the Netherlands
📍 Cheltenham, UK
📍 Abbeymead, Gloucester GL4, UK
📍 California, US
📍 Millcreek, UT, USA
📍 301–379 Elworthy Ranch Cir, Danville, CA, US
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Kyle Eaton · CC BY-NC 4.0
- 2. © Robin Gwen Agarwal · CC BY-NC 4.0
- 3. © RAP · CC BY 4.0
- 4. © Tone Killick · CC BY 4.0
- 5. © Meghan Cassidy · CC BY-SA 4.0
- 6. Cheltenham, UK:© Tone Killick · CC BY 4.0
- 7. Abbeymead, Gloucester GL4, UK:© Tone Killick · CC BY 4.0
- 8. California, US:© Kyle Eaton · CC BY-NC 4.0
- 9. Millcreek, UT, USA:© maticus · CC BY-NC 4.0
- 10. 301–379 Elworthy Ranch Cir, Danville, CA, US:© Ken-ichi Ueda · CC BY 4.0
what is it?
The woodlouse spider , Dysdera crocata , is a species of spider that preys primarily upon woodlice. Other common names refer to variations on the common name of its prey, including woodlouse hunter , sowbug hunter , sowbug killer , pillbug hunter and slater spider .
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- Spotted 17 times in the Netherlands on iNaturalist.
- 30,368 observations worldwide on iNaturalist.
- Scientifically named by Carl Ludwig Koch in 1838 (188 years ago).
fact sheet
- English
- Woodlouse Spider
- Nederlands
- Roodwitte Celspin
- scientific name
- Dysdera crocata
- class
- Arachnida
- order
- Araneae
- family
- Dysderidae
- sightings in NL
- 17
- sightings in Europe
- 1,235
- sightings worldwide
- 30,368
- GBIF records in NL
- 109
- weight
- —
- length
- —
- lifespan
- —
- named
- 1838 by Carl Ludwig Koch
Sources: iNaturalist taxon 68912, Wikidata Q1150747, GBIF 2139331, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.